CN102029890B - EV-AT synchronizer gearshift control method - Google Patents
EV-AT synchronizer gearshift control method Download PDFInfo
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- CN102029890B CN102029890B CN 201010571684 CN201010571684A CN102029890B CN 102029890 B CN102029890 B CN 102029890B CN 201010571684 CN201010571684 CN 201010571684 CN 201010571684 A CN201010571684 A CN 201010571684A CN 102029890 B CN102029890 B CN 102029890B
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Abstract
The invention discloses an electric vehicle (EV)-automatic transmission (AT) synchronizer gearshift control method and belongs to the field of hybrid automobile power systems. The method comprises a speed regulating process, a synchronizing process and a torque loading process. When a gearshift command is received, an inner motor is subjected to the speed regulating process, a current outer motor rotating speed command is transmitted to the inner motor, the mode is a normal mode, and an engine performs idle speed control; when slip of the inner and outer motors meets the requirement, the speed regulation is finished; and if the slip of the inner and outer motors does not meet the requirement, the speed regulation control is continuously performed until the slip requirement is met, and the synchronizing process is performed. In the synchronizing process, the inner motor and the outer motor are power-off, the engine performs idle speed control and begins to shift gear, if the gearshift is failed, the speed regulating process and the synchronizing process are repeated until the gearshift is successful, and torque loading is performed. The gearshift control method makes the mode smoothly switched.
Description
Technical field
The present invention relates to a kind of EV-AT synchronizer shift control method, belong to field of hybrid electric vehicles.
Background technology
EV-AT (Electrical Variable Automatic Transmission, electronics infinitely variable speed device) also claims to be made of double-rotor machine inner and outer Rotator and stator.Armature loop all is installed on internal rotor and the stator, two groups of magnet steel are installed on the outer rotor, first group of magnet steel is positioned at the outer rotor outside, be damascene structures, second group is positioned at for the outer rotor inboard, is the surface-mount type structure, and the inboard formation of internal rotor and outer rotor has the interior electric system (motor in being called for short) of individual motor feature, the outer rotor outside and stator consist of the outer motor system (being called for short outer motor) with individual motor feature, and integral body is nesting formula dual motors system.In being applied to hybrid power system, driving engine is connected to internal rotor, outer rotor is connected to drive axle, motor torque outputs to drive axle by the electromagnetic coupled effect between the inner and outer rotors, in order to increase drive pattern, optimize engine operation efficient, engine output shaft is designed to and can links to each other by gear with outer motor output shaft, and realize the switching of gear pattern by synchro and actuating unit.
A kind of electric power stepless speed variator system and hybrid vehicle are disclosed in the patent application " a kind of electric power stepless speed variator system and hybrid vehicle " (application number is 200920173468.5), this application cooperates the electric power stepless speed variator system with the output of realization oil electric mixed dynamic with driving engine, get a good chance of becoming a kind of form of advanced deep hybrid power system.Planetary wheel hybrid power system of the prior art, its torque density is low, and speed adjustable range is narrow, and cost is also higher.
Summary of the invention
In view of the above problems, the present invention is based on the structure of patent application " a kind of electric power stepless speed variator system and hybrid vehicle ", proposed a kind of EV-AT synchronizer shift control method, the method has solved the gearshift control problem of electric power stepless speed variator system and hybrid vehicle, pattern is switched smooth-going.
A kind of hybrid vehicle comprises driving engine, electric power stepless speed variator system and drive axle.Described electric power stepless speed variator system comprises synchro and double-rotor machine, realizes what the hybrid power of driving engine and double-rotor machine was exported by synchro.
Gearshift controller is issued the synchro control command, and shift process is controlled, and accepts simultaneously synchro feedback position signal, and the process of carrying out is judged and control.
Based on above structure, driving engine and interior motor connect firmly, synchronizer shift is outputted to interior electric machine speed regulation ratio from driving engine and is easier to, directly throw off and get final product, directly to export difficulty larger and switch to driving engine from interior electric machine speed regulation, need to the gear shift speed governing be controlled, Given this, the present invention proposes a kind of EV-AT synchronizer shift control method, the method comprises the steps:
1) speed governing step: after receiving shift command, internally motor carries out speed governing, until the slip of inside and outside motor meets the demands;
2) synchronizing step: interior motor and outer motor all cut off the power supply, Eng ine Idling Control, beginning gear shift;
If gear shift is unsuccessful, repeating step 1) and step 2), until shift gears successfully;
3) torque load step; Calculate the moment of torsion that driving engine need provide under the current rotating speed moment of torsion and outer motor need provide; Progressively increase engine torque, and increase outer motor moment of torsion simultaneously.
Described speed governing step comprises:
1) gives the rotary speed instruction of interior motor with current outer motor, and calculate interior motor speed rate of change k1 and outer motor relative speed variation k2;
2) receive shift command to the speed delay N of the interior motor of beginning shift point according to the operating delay time t2 calculating synchro of interior motor speed rate of change k1 and synchro
BC
3) receive shift command to the speed delay N of the outer motor of beginning shift point according to the operating delay time t2 calculating synchro of outer motor relative speed variation k2 and synchro
Bc
4) when the rpm of the slip of inside and outside motor≤(50+NBC+Nbc), speed governing is finished.
The invention solves the gear shift control problem of existing gearshift mechanism, can make gear shift smooth-going, the car load traveling comfort is good.
Description of drawings
The structural representation of Fig. 1: EV-AT;
Fig. 2: the control method diagram of circuit among the present invention;
Fig. 3: synchronizer shift schematic diagram.
The specific embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
Control method among the present invention is based on that the structure of patent application " a kind of electric power stepless speed variator system and hybrid vehicle " (application number is 200920173468.5) proposes, and the hybrid vehicle in this application comprises driving engine, electric power stepless speed variator system and drive axle.Described electric power stepless speed variator system comprises synchro and double-rotor machine, realizes what the hybrid power of driving engine and double-rotor machine was exported by synchro.
Fig. 1 is its structural representation, comprises driving engine 1, torsion vibration absorber 2, synchro 3, controller for shifting 4, gear shifting operator 5, stator 6, outer rotor 7, internal rotor 8, slip ring/brush 9, transmission shaft 10, main reduction gear 11 and diff 12.Synchro gearshift wherein has two positions, and hanging to the left side is 1 gear, represents outer motor output mode in parallel, and hanging to the right is 2 gears, electric machine speed regulation pattern in the expression.The concrete car load drive pattern that can realize sees the following form.
Table 1 drive pattern
Switch based on above structure and pattern, driving engine and interior motor connect firmly, synchronizer shift is outputted to interior electric machine speed regulation ratio from driving engine and is easier to, directly throw off and get final product, directly to export difficulty larger and switch to driving engine from interior electric machine speed regulation, need to control the gear shift speed governing, the present embodiment has namely proposed a kind of shift control method that switches to the direct output of driving engine from interior electric machine speed regulation, and the groundwork of this method is described below in conjunction with Fig. 3:
Respective point is defined as among Fig. 3:
The A point is the gear shift starting point, and namely entire car controller determines the moment of gear shift demand; Put internal motor from this and carry out the gear shift speed control;
The B point is the synchronic command point, namely issues the point of synchronizer shift instruction;
The C point begins action constantly for synchro;
The D point is the first shift point;
The E point is the second shift point;
The P point is the speed governing intermediate point, is used for calculating the speed governing slope;
Shift time: T=t1+t2+t3;
The t1-governing time;
In the t2-operating delay time, namely issue synchronous execution instruction to time that synchro begins to move;
T3-synchronization time, the beginning gear shift is to the gear shift deadline;
This gear-shifting control method is divided into three phases, as shown in Figure 2:
1, speed regulation process: begin to meet the gear shift requirement to slip from the gear shift demand is arranged, i.e. A-B among the figure;
2, synchronizing process; Send shift command and finish to gear shift, be i.e. B-D among the figure;
3, torque loading procedure after the gear shift: be accomplished to synchronously driving engine and motor driven;
Above step is elaborated:
Speed regulation process: at the rotary speed instruction a of A point to the current outer motor of interior motor, and in the P point calculates motor speed rate of change k1 and outer motor relative speed variation k2; The percentage speed variation of supposing in the gear shift speed regulation process inside and outside motor all is linear relationships, because the operating delay time t2 of synchro is known, can calculate the slip N between the some BC of interior motor according to slope k 1 and k2
BC(N
BC=k1*t1) and the slip N between the some bc of outer motor
Bc(N
Bc=k2*t2); Because theoretical inside and outside motor slip≤50rpm (rev/min) time can carry out gear-change operation, therefore as the slip that determines inside and outside motor≤(50+N
BC+ N
Bc) can carry out shift command during rpm; Speed regulation process is finished.
In the speed regulation process, outer motor torque command drives requirement command to car load, and interior motor speed is given current outer motor rotating speed, and pattern is normal mode, Eng ine Idling Control.
Synchronizing process: judge inside and outside motor slip and gearshift value, if in the first shift point gear shift success synchronizing process finish, if unsuccessful in the first shift point gear shift, according to upper figure, repeat speed regulation process and synchronizing process, seek the second shift point and carry out gear shift, until shift gears successfully.The motor outage of synchronizing process China and foreign countries, interior motor outage, Eng ine Idling Control.
Torque loading procedure after the gear shift: same EOS, calculate the torque rating that torque rating that the driving engine under the current rotating speed need provide and outer motor need provide, the response of considering driving engine is slower, and the response of motor is very fast, therefore need progressively to increase according to the speed of response of driving engine the moment of torsion of driving engine, and increase simultaneously the driving torque of outer motor.
Abovely a kind ofly introduce in detail be used to carrying out EV-AT synchronizer shift control method provided by the present invention, used specific embodiment herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications.In sum, this description should not be construed as limitation of the present invention.
Claims (1)
1. an EV-AT synchronizer shift control method is characterized in that comprising the steps:
1) speed governing step: after receiving shift command, internally motor carries out speed governing, until the slip of interior motor and outer motor meets the demands, concrete steps are:
I) give the rotary speed instruction of interior motor with current outer motor, and calculate interior motor speed rate of change k1 and outer motor relative speed variation k2;
Ii) receive shift command to the slip N of the interior motor of beginning shift point according to the operating delay time t2 calculating synchro of interior motor speed rate of change k1 and synchro
BC
Iii) receive shift command to the slip N of the outer motor of beginning shift point according to the operating delay time t2 calculating synchro of outer motor relative speed variation k2 and synchro
Bc
Iv) as the slip of inside and outside motor≤(50+N
BC+ N
Bc) during rpm, speed governing is finished;
2) synchronizing step: interior motor and outer motor all cut off the power supply, Eng ine Idling Control, beginning gear shift;
If gear shift is unsuccessful, repeating step 1) and step 2), until shift gears successfully;
3) torque load step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010571684 CN102029890B (en) | 2010-11-29 | 2010-11-29 | EV-AT synchronizer gearshift control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010571684 CN102029890B (en) | 2010-11-29 | 2010-11-29 | EV-AT synchronizer gearshift control method |
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| Publication Number | Publication Date |
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| CN102029890A CN102029890A (en) | 2011-04-27 |
| CN102029890B true CN102029890B (en) | 2013-03-27 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103863297A (en) * | 2012-12-17 | 2014-06-18 | 上海汽车集团股份有限公司 | Power system control method |
| EP3473894B1 (en) | 2017-10-20 | 2021-05-19 | Ningbo Geely Automobile Research & Development Co. Ltd. | Method for synchronisation of a first transmission component |
| CN111102304B (en) * | 2018-10-26 | 2021-08-17 | 上海汽车集团股份有限公司 | Synchronizer synchronization method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1272203C (en) * | 2004-06-18 | 2006-08-30 | 清华大学 | Shift controlling method of clutch-less operation for parallel type mixed power automobile |
| CN1609479A (en) * | 2004-09-29 | 2005-04-27 | 中国第一汽车集团公司 | Front-located parallel mixed power vehicle motor active synchronous gears shifting method |
| JP3985832B2 (en) * | 2005-11-02 | 2007-10-03 | トヨタ自動車株式会社 | Control device for hybrid vehicle |
| US8825320B2 (en) * | 2007-11-02 | 2014-09-02 | GM Global Technology Operations LLC | Method and apparatus for developing a deceleration-based synchronous shift schedule |
| CN201511807U (en) * | 2009-08-25 | 2010-06-23 | 北京汽车研究总院有限公司 | Electric power stepless speed change system and hybrid power vehicle |
| CN101830221B (en) * | 2010-04-15 | 2013-02-27 | 大连理工大学 | Electric motor zero torque control bisynchronous shifting method for hybrid vehicle |
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Address after: 102606 Beijing city Daxing District Caiyu town mining and Road No. 1 Patentee after: BAIC BJEV Address before: 102606 Beijing city Daxing District Caiyu town mining and Road No. 1 Patentee before: Beijing Automobile New Energy Automobile Co.,Ltd. |
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